package com.filter;

import com.alibaba.fastjson.JSON;
import com.util.BaseContext;
import com.util.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.util.AntPathMatcher;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Slf4j
@WebFilter(filterName = "loginCheckFilter",urlPatterns = "/*")
public class LoginCheckFilter implements Filter {
    public static final AntPathMatcher PATH_MATCHER = new AntPathMatcher();

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String uri = request.getRequestURI();
        String urls[] = new String[]{
                "/employee/login",
                "/employee/logout",
                "/backend/**",
                "/front/**",
                "/common/**",
                "/user/**"
        };

        boolean check = check(urls,uri);

        if (check){
            filterChain.doFilter(request,response);
            return;
        }

        if (request.getSession().getAttribute("employee")!=null){
            Long emplid = (Long) request.getSession().getAttribute("employee");
            BaseContext.setCurrentId(emplid);
            filterChain.doFilter(request,response);
            return;
        }
        if (request.getSession().getAttribute("user")!=null){
            Long userid = (Long) request.getSession().getAttribute("user");
            BaseContext.setCurrentId(userid);
            filterChain.doFilter(request,response);
            return;
        }
        response.getWriter().write(JSON.toJSONString(R.error("NOTLOGIN")));
        return;
    }
    public boolean check(String urls[],String requestURI){
        for (String url : urls){
            boolean match = PATH_MATCHER.match(url, requestURI);
            if (match){
                return true;
            }
        }
        return false;
    }

}
